KR101600655B1 - Mobile station apparatus, base station apparatus, radio communication method and integrated circuit - Google Patents

Abstract

The transmission power of a plurality of uplink carrier elements used for radio communication by the mobile station apparatus and the base station apparatus is efficiently controlled. The mobile station apparatus performs wireless communication with the base station apparatus using a plurality of component carriers. The mobile station apparatus transmits information indicating a radio resource allocation of a DL common channel allocated to a downlink component carrier of a downlink control channel and an uplink component carrier for transmitting an ACK / NACK for a downlink common channel From the base station apparatus, downlink control information including a TPC command for the uplink control channel of the uplink control channel.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mobile station apparatus, a base station apparatus, a radio communication method, and an integrated circuit (MOBILE STATION APPARATUS, BASE STATION APPARATUS, RADIO COMMUNICATION METHOD AND INTEGRATED CIRCUIT)

The present invention relates to a mobile station apparatus, a base station apparatus, a radio communication method, and an integrated circuit.

(Hereinafter referred to as " Long Term Evolution (LTE) or Evolved Universal Terrestrial Radio Access (EUTRA) ") and a broader frequency, (Hereinafter referred to as "Long Term Evolution-Advanced (LTE-A)" or "Advanced Evolved Universal Terrestrial Radio Access (A-EUTRA)") Are being reviewed in the 3rd Generation Partnership Project (3GPP).

In LTE, an Orthogonal Frequency Division Multiplexing (OFDM) scheme, which is a multicarrier transmission, is used as a downlink. Further, as the uplink, a single-carrier communication system of a single-carrier frequency-division multiple access (SC-FDMA) scheme, which is a single-carrier transmission, is used. Also, in the LTE, a radio communication (downlink) from a base station apparatus to a mobile station apparatus includes a PBCH, a Physical Downlink Control Channel (PDCCH), a Physical Downlink Control Channel A PDSCH, a Physical Multicast Channel (PMCH), a Physical Format Indicator Channel (PCFICH), and a Physical Hybrid Automatic Repeat Request Indicator Channel (PHICH).

In addition, a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a random access channel (PRACH) Random Access Channel).

In LTE, in order to measure the quality of an uplink control channel, an uplink shared channel, and an uplink channel for interference control between base stations and power saving of a mobile station apparatus, a sounding reference signal ) Is controlled by a plurality of parameters. The parameters for controlling the transmission power include a parameter based on the path loss measured from the downlink signal by the mobile station device and a parameter notified to the mobile station device by the base station device. Parameters that the base station apparatus notifies to the mobile station apparatus include parameters set in common between the mobile station apparatuses and parameters set for each mobile station apparatus. A TPC command (Transmission Power Control command), which is a parameter for each mobile station apparatus notified to the mobile station by the base station apparatus, is transmitted on the downlink control channel (see Non-Patent Document 1, Chapter 5).

A format of downlink control information (Downlink Control Information) transmitted on the downlink control channel is described in subclause 5.3.3 of Non-Patent Document 2. The TPC command for the uplink shared channel and the sounding reference signal is included in the format for indicating the allocation of the radio resources of the uplink shared channel. Hereinafter, this format is referred to as an " uplink grant ". The TPC command for the uplink control channel is included in the format for indicating the allocation of the radio resources of the downlink shared channel. Hereinafter, this format is referred to as a downlink grant (Downlink grant).

Format 3 and format 3A including only a plurality of TPC commands for a plurality of mobile station apparatuses are defined. Format 3 and Format 3A differ in the number of bits of each TPC command included in the format. Hereinafter, format 3 and format 3A are collectively referred to as format 3 / 3A. The base station apparatus notifies the mobile station apparatus of the identifier and one number, and the mobile station apparatus transmits the TPC command of the number notified from the base station apparatus, included in the format 3 / 3A including the identifier notified from the base station apparatus, Of the TPC command. In order to identify whether the TPC command included in Format 3 / 3A is for the uplink control channel or the uplink common channel and the sounding reference signal, the base station apparatus allocates two identifiers, and allocates one Assign a number. A TPC-PUSCH-RNTI (Transmission Power Control-Physical Uplink Control Channel-Radio Network Temporary Identifier) identifier corresponding to the uplink control channel, an identifier corresponding to the uplink common channel and the sounding reference signal, Quot; Transmission Power Control-Physical Shared Control Channel-Radio Network Temporary Identifier ").

Since format 3 / 3A needs to be received by a plurality of mobile stations, all the mobile stations are arranged in a common search space for searching for a downlink control channel, and a downlink control channel for a specific mobile station It is not placed in the User Equipment-specific Search Space to be placed. In format 3 / 3A, for example, when the base station apparatus does not allocate the radio resources of the downlink common channel to the uplink common channel or the downlink common channel to the mobile station in the uplink grant, When transmitting an uplink control channel for a common channel, a sounding reference signal, and a downlink common channel, the base station apparatus is used for transmitting a TPC command for controlling transmission power of an uplink signal of the mobile station .

The LTE-A has compatibility with LTE, that is, the base station apparatus of the LTE-A performs radio communication simultaneously with both of the LTE-A and LTE mobile stations, Is required to be able to perform radio communication with both base stations of LTE-A and LTE, and it is considered to use the same channel structure as LTE.

For example, in LTE-A, a plurality of frequency bands (hereinafter referred to as " carrier component (CC) " or " component carrier (CC) (Also referred to as spectrum aggregation, frequency aggregation, or the like) is used as a technique for using a frequency band as a single frequency band (frequency band that is a wide band).

Specifically, in communication using frequency band aggregation, a notification channel, a downlink control channel, a downlink shared channel, a multicast channel, a control format indicator channel, and an HARQ indicator channel are transmitted for each downlink carrier element, An uplink shared channel, an uplink control channel, and a random access channel are allocated to each of the carrier elements. That is, in the frequency band aggregation, in the uplink and downlink, the base station apparatus and the plurality of mobile station devices transmit the uplink control channel, the uplink shared channel, the downlink control channel, the downlink shared channel, (Refer to Non-Patent Document 3, Chapter 5).

Non-Patent Document 1: "3GPP TS36.213 v8.6.0 (2009-03) ", March 17, 2009. Non-Patent Document 2: "3GPP TS36.212 v8.6.0 (2009-03) ", March 17, 2009. Non-Patent Document 3: "3GPP TR36.814 v1.0.2 (2009-03) ", May, 2009.

However, in the related art, there is a problem that a method of allocating a plurality of uplink carrier elements to the mobile station and efficiently controlling the transmission power of each channel of the uplink carrier element is not disclosed. More specifically, in the conventional technique, the TPC command for the uplink control channel included in the downlink grant can not indicate which TPC command is for the uplink control channel of the uplink carrier element. Thereby, the mobile station apparatus applies the TPC command for the uplink control channel included in the downlink grant to the uplink carrier element to which the radio resource of the uplink control channel is not allocated to the base station apparatus, There is a problem that the TPC command included in the grant becomes useless.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mobile station apparatus capable of allocating a plurality of uplink carrier elements to a mobile station apparatus and efficiently controlling the transmission power of allocated uplink carrier elements, A base station apparatus, a wireless communication method, and an integrated circuit.

(1) The present invention has been achieved in order to solve the above problems, and it is an object of the present invention to provide a base station apparatus which performs radio communication with a mobile station apparatus by using a plurality of component carriers, Link control information including a TPC command for an uplink control channel of an uplink component carrier for transmitting an ACK / NACK for the downlink shared channel, To the device.

(2) Further, the present invention is a mobile station apparatus that performs radio communication with a base station apparatus using a plurality of component carriers, and is characterized by comprising: information indicating radio resource allocation to a downlink common channel allocated to any one of downlink component carriers; And downlink control information including a TPC command for an uplink control channel of an uplink component carrier that transmits ACK / NACK for the downlink shared channel, from the base station apparatus.

(3) Further, the present invention is a wireless communication method by a base station apparatus that performs wireless communication with a mobile station apparatus by using a plurality of component carriers, wherein the base station apparatus is a downlink shared To the mobile station apparatus, information indicating radio resource allocation to the channel and downlink control information including a TPC command for an uplink control channel of an uplink component carrier for transmitting ACK / NACK for the downlink shared channel And transmits the data.

(4) Further, the present invention is a radio communication method by a mobile station apparatus that performs radio communication with a base station apparatus using a plurality of component carriers, the mobile station apparatus comprising: a downlink shared And a downlink control channel including a TPC command for an uplink control channel of an uplink component carrier for transmitting an ACK / NACK for the downlink shared channel, And receiving the data.

(5) Further, the present invention is an integrated circuit provided in a base station apparatus that performs wireless communication with a mobile station apparatus using a plurality of component carriers, the base station apparatus comprising: a downlink Information indicating a radio resource allocation to a common channel, and downlink control information including a TPC command for an uplink control channel of an uplink component carrier for transmitting an ACK / NACK for the downlink shared channel, To the mobile station.
(6) Further, the present invention is an integrated circuit provided in a mobile station apparatus that performs radio communication with a base station apparatus using a plurality of component carriers, the mobile station apparatus comprising: a downlink Information indicating a radio resource allocation to a common channel and downlink control information including a TPC command for an uplink control channel of an uplink component carrier for transmitting ACK / NACK for the downlink shared channel, From the base station.

According to the present invention, the base station apparatus can efficiently control the transmission power of the uplink control channel of a plurality of uplink carrier elements allocated to the mobile station apparatus.

More specifically, according to the present invention, the base station apparatus transmits downlink control information (ACK / NACK) for a downlink shared channel, in which the downlink control information indicates assignment of radio resources, to downlink control information (downlink grant) NACK) for the uplink control channel of the uplink carrier element, and transmits the TPC command to the mobile station apparatus. Thereby, the base station apparatus allocates the radio resources of the downlink shared channel by using the same downlink control information (downlink grant), allocates the uplink carrier element for transmitting the ACK / NACK for the downlink shared channel The transmission power of the uplink control channel can be controlled. That is, the base station apparatus can efficiently control the transmission power of the uplink control channel of a plurality of uplink carrier elements allocated to the mobile station apparatus.

1 is a conceptual diagram of a wireless communication system according to an embodiment of the present invention;
2 is a diagram showing an example of a frequency band integration processing according to the present embodiment;
3 is a schematic diagram showing an example of the configuration of a downlink radio frame according to the present embodiment;
4 is a schematic diagram showing an example of the configuration of an uplink radio frame according to the present embodiment;
5 is a schematic block diagram showing a configuration of a base station apparatus b1 according to the present embodiment.
6 is a diagram showing an example of various setting information stored in the storage unit b113 according to the present embodiment.
Fig. 7 is a schematic block diagram showing the configuration of the mobile station apparatus al according to the present embodiment. Fig.
8 is a diagram showing an example of various setting information stored in the storage section a113 according to the present embodiment.
9 is a diagram showing an example of a configuration of a transmission power control format according to the present embodiment;
10 is a diagram showing a method of applying the TPC command to the uplink shared channel of the mobile station apparatus al according to the present embodiment.
11 is a flowchart showing an example of the operation of the base station apparatus b1 according to the present embodiment.
12 is a flowchart showing an example of the operation of the mobile station apparatus al according to the present embodiment.
Fig. 13 is a schematic block diagram showing the configuration of a base station apparatus b2 according to the first reference example of the present invention; Fig.
14 is a diagram showing an example of various setting information stored in the storage unit b213 according to the present reference example;
15 is a schematic block diagram showing a configuration of a mobile station apparatus a2 according to the first reference example of the present invention.
16 is a diagram showing an example of various setting information stored in the storage section a213 according to the present reference example.
17 is a diagram showing a method of applying a TPC command to an uplink common channel of the mobile station a2 according to the present reference example.
18 is a schematic block diagram showing a configuration of a base station apparatus b3 according to a second reference example of the present invention;
19 is a diagram showing an example of various setting information stored in the storage unit b313 according to the present reference example;
20 is a schematic block diagram showing a configuration of a mobile station apparatus a3 according to a second reference example of the present invention.
21 is a diagram showing an example of various setting information stored in the storage unit a313 according to the present reference example;
22 is a diagram showing a method of applying a TPC command to an uplink common channel of the mobile station apparatus a3 according to the present reference example;

(Embodiment of the present invention)

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

<About Wireless Communication System>

1 is a conceptual diagram of a wireless communication system according to an embodiment of the present invention. 1, the radio communication system includes mobile station devices A1 to A3 and a base station device B1. The mobile station devices A1 to A3 and the base station device B1 perform communication using frequency band aggregation, which will be described later.

1 is also referred to as a downlink pilot channel (or "downlink reference signal (DL RS)") in a wireless communication (downlink) from the base station apparatus B1 to the mobile stations A1 to A3. A Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Multicast Channel (PMCH), a Control Channel A Physical Indication Channel (PCFICH), and a Physical Hybrid ARQ Indicator Channel (PHICH).

1 also shows an example of an uplink pilot channel (or an uplink reference signal (UL RS)) in the radio communication (uplink) from the mobile station apparatuses A1 to A3 to the base station apparatus B1 A Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH), and a Physical Random Access Channel (PRACH). The uplink reference signal includes a demodulation reference signal that is time-multiplexed with the uplink shared channel or the uplink control channel and used for compensation of propagation paths of the uplink shared channel and the uplink control channel, There is a sounding reference signal used for estimating the situation of the propagation path of the link.

Hereinafter, the mobile stations A1 to A3 will be referred to as a mobile station a1 and the base station B1 will be referred to as a base station b1.

<About frequency band intensive>

2 is a diagram showing an example of the frequency band integration processing according to the present embodiment. In Fig. 2, the horizontal axis represents the frequency domain and the vertical axis represents the time domain.

2, the subframe D1 of the downlink is divided into subframes of three carrier elements (DCC-1: Downlink Component Carrier-1, DCC-2, DCC-3) having a bandwidth of 20 MHz Consists of. In each subframe of the downlink carrier element (referred to as a downlink carrier element), a downlink control channel indicated by a region hatching with a lattice line and a downlink common channel indicated by a non-hatched region are time-multiplexed .

On the other hand, the uplink subframe U1 is constituted by three carrier components (UCC-1: Uplink Component Carrier-1, UCC-2, UCC-3) having a bandwidth of 20 MHz. In each of the subframes of the uplink carrier element (referred to as the uplink carrier element), an uplink control channel indicated by a region hatching with an oblique lattice line and an uplink shared channel indicated by an area hatched with a leftward line Multiplexed and allocated.

For example, the base station apparatus (b1) arranges a signal in a downlink shared channel of one or a plurality of downlink carrier elements among three downlink carrier elements in a certain subframe of a downlink, . In addition, the mobile station apparatus (a1) arranges a signal in the uplink common channel of one or a plurality of uplink carrier elements among three uplink carrier elements in a certain uplink subframe and transmits the signal to the base station apparatus (b1) do.

&Lt; About downlink radio frame >

3 is a schematic diagram showing an example of the configuration of a downlink radio frame according to the present embodiment. 3 shows a configuration of a radio frame in a certain downlink carrier element. In Fig. 3, the abscissa is time domain and the ordinate is frequency domain.

As shown in FIG. 3, the radio frame of the downlink carrier element is composed of a plurality of downlink Physical Resource Block (PRB) pairs (for example, an area surrounded by a dashed line in FIG. 3). The physical resource block pair of the downlink is a unit such as allocation of radio resources and is composed of a frequency band (PRB bandwidth) of a predetermined width and a time zone (two slots = one subframe).

One downlink physical resource block pair is composed of two downlink physical resource blocks (PRB bandwidth x slots) continuous in the time domain. One downlink physical resource block (unit surrounded by a bold line in Fig. 3) is composed of 12 subcarriers in the frequency domain and 7 OFDM symbols in the time domain.

In the time domain, there is a radio frame composed of a slot composed of 7 OFDM symbols, a subframe composed of 2 slots, and 10 subframes. In the frequency domain, a plurality of downlink physical resource blocks (PRBs) are arranged according to the bandwidth of the downlink carrier element. In addition, a unit composed of one subcarrier and one OFDM symbol is referred to as a downlink resource element (RE).

Hereinafter, a channel allocated in the downlink radio frame will be described.

In each subframe of the downlink, for example, a downlink control channel, a downlink common channel, and a downlink reference signal are allocated. The downlink control channel is arranged from the OFDM symbol at the head of the subframe, and the downlink shared channel is allocated to the remaining OFDM symbol of the subframe. For the sake of simplicity of explanation, the downlink pilot channel is not shown in FIG. 3, but the downlink pilot channel is distributed in the frequency domain and the time domain.

First, signals to be allocated to the downlink control channel will be described.

The downlink control channel includes an information format, such as a downlink grant, an uplink grant, a transmission power control format (an information format of a control channel for transmission power control), and the like, The downlink control information (DCI) signal is disposed.

Further, the downlink grant includes information indicating a modulation scheme for the downlink shared channel, information indicating a coding scheme, information indicating allocation of radio resources, information regarding HARQ (Hybrid Automatic Repeat Request) (Transmission Power Control) command for an uplink control channel of an uplink carrier element that transmits ACK (acknowledgment) / NACK (negative acknowledgment) to the DL common channel indicating allocation of the uplink shared channel . Also, the uplink grant includes information indicating a modulation scheme for an uplink shared channel, information indicating a coding scheme, information indicating allocation of radio resources, information regarding HARQ, information indicating uplink grant allocation A common channel, a TPC command for a sounding reference signal of the uplink carrier element that is the same as the uplink shared channel, and the like.

The HARQ is a method in which the mobile station a1 (base station b1) transmits a decoded portion (ACK / NACK) of data information to the base station b1 (mobile station a1) The base station apparatus b1 (the mobile station apparatus a1) retransmits the signal when the mobile station apparatus a1 (the base station apparatus b1) can not decode the data information due to an error (NACK) (Base station device b1) performs a decoding process on the composite signal of the signal received again and the signal already received.

The transmission power control format is constituted by an uplink common channel of each uplink carrier element of the plurality of mobile station apparatuses a1 or a TPC command for the uplink control channel. The number of bits of one TPC command included in the transmission power control format is all the same and the TPC command for the uplink shared channel and the uplink control channel is not simultaneously included in the transmission power control format. In addition, the number of bits of one TPC command included in the transmission power control format is selected by the base station device b1, and the selected number of bits is notified to the mobile station device a1.

In addition, the TPC command received in the downlink grant, uplink grant, and transmission power control format is applied after a predetermined time. Further, in the present embodiment, every time the TPC command is received, only the received TPC command is applied to the transmission power control, but a value obtained by accumulating the value of the TPC command received so far may be applied.

The downlink control information is added with a cyclic redundancy check (CRC) code generated from a bit sequence of downlink control information and a sequence obtained by exclusive-ORing with an identifier. The mobile station apparatus (a1) can also acquire the cyclic redundancy check code by performing an exclusive-OR operation on the identifier assigned to this sequence. That is, the mobile station a1 can determine from the identifier included in the downlink control channel whether the downlink control channel is transmitted to the magnetic device.

A C-RNTI (Cell-Radio Network Temporary Identifier), which is an identifier allocated to each mobile station a1 by the base station b1, is included in the downlink grant and uplink grant transmitted before a specific mobile station a1 . The transmission power control format includes a TPC-PUCCH-RNTI (Transmission Power Control-Physical Uplink Control Channel-Radio Network Temporary Identifier) that is an identifier assigned to the plurality of mobile station apparatuses a1 by the base station apparatus b1 or a TPC- (TPC-PUCCH-RNTI) and a TPC-PUSCH-RNTI are contained in the transmission power control format. The mobile station apparatus (a1) , It is determined whether the TPC command included in the transmission power control format is for the uplink control channel or for the uplink shared channel and the sounding reference signal.

Next, signals to be allocated to the downlink shared channel will be described.

In the downlink shared channel, a signal (referred to as a data signal) of data information (transport block) is arranged. The radio resources of the downlink shared channel are allocated using a downlink grant, and are allocated in the same downlink subframe as the downlink control channel including the downlink grant. In the present embodiment, the downlink shared channel indicating the allocation of radio resources by the downlink control channel and the downlink control channel is arranged in the same downlink carrier element. In addition, the present invention is not limited to this, and it is also possible to identify a downlink carrier element for allocating a downlink shared channel from a downlink grant, The channels may be placed in different downward carrier elements.

Hereinafter, a radio resource for allocating a downlink control channel will be described.

The downlink control channel is allocated in one or more Control Channel Elements (CCEs). The control channel element is composed of a plurality of resource element groups (REG. Also referred to as mini-CCEs) dispersed in the frequency time domain in the downlink carrier element. The resource element group consists of four downlink resource elements that are continuous in the frequency domain except for the downlink reference signal in the same OFDM symbol of the same downlink carrier element. For example, the downlink control channel is arranged in one, two, four, or eight control channel elements in which the number identifying the control channel element is continuous.

In addition, a common search space (Common Search Space) composed of predetermined control channel elements and a mobile station apparatus specific search space (User Equipment Specific Search Space) composed of the same or different control channel elements for each mobile station a1, Is configured for each downlink carrier element. The common search space and the mobile station device specific search space constitute a common search space and a mobile station device specific search space for each number of control channel elements in which the downlink control channel is located. That is, when the downlink control channel is allocated to 1, 2, 4, and 8 control channel elements, four mobile station unique search spaces are configured. Further, different common search spaces and mobile station device specific search spaces may be configured using the same control channel element.

The common search space includes a downlink control channel including information for a plurality of mobile station apparatuses a1 such as a transmission power control format and information on a downlink grant and uplink grant in front of a specific mobile station a1 A downlink control channel is arranged. In the mobile station apparatus specific search space, a downlink control channel including information such as a downlink grant and an uplink grant in front of the mobile station a1 monitoring the mobile station apparatus specific search space is arranged. The base station apparatus b1 also sets a downlink carrier element for monitoring the downlink control channel in the common search space for each mobile station a1 and notifies the mobile station a1 of the set downlink carrier element. Hereinafter, a downlink carrier element for monitoring a common search space set for each mobile station a1 is referred to as an anchor Downlink Component Carrier.

&Lt; About Uplink Radio Frame >

4 is a schematic diagram showing an example of the configuration of an uplink radio frame according to the present embodiment. 4 shows a configuration of a radio frame in a certain uplink carrier element. In Fig. 4, the abscissa is time domain and the ordinate is frequency domain.

As shown in Fig. 4, the radio frame of the uplink carrier element is composed of a plurality of uplink Physical Resource Block (PRB) pairs (for example, a region surrounded by a dashed line in Fig. 4). This physical resource block pair in the uplink is a unit such as allocation of radio resources and is composed of a frequency band (PRB bandwidth) of a predetermined width and a time zone (two slots = one subframe).

One uplink physical resource block pair is composed of two uplink physical resource blocks (PRB bandwidth x slots) continuous in the time domain. One uplink physical resource block (unit surrounded by a bold line in Fig. 4) is composed of 12 subcarriers in the frequency domain and 7 SC-FDMA symbols in the time domain.

In the time domain, there is a radio frame composed of a slot composed of 7 SC-FDMA symbols, a sub-frame composed of 2 slots, and 10 sub-frames. In the frequency domain, a plurality of uplink physical resource blocks (PRB) are arranged according to the bandwidth of the uplink carrier element. A unit composed of one subcarrier and one SC-FDMA symbol is referred to as an uplink resource element (RE).

Hereinafter, a channel allocated in an uplink radio frame will be described.

In each subframe of the uplink, for example, an uplink control channel, an uplink shared channel, and an uplink reference signal are allocated.

The uplink control channel is allocated to a physical resource block pair (an area hatched by leftward slanting lines) of the uplink at both ends of the bandwidth of the uplink carrier element. Also, the uplink control channel is spread by the spreading code in the frequency domain and the time domain, and is multiplexed.

The uplink shared channel is allocated to an uplink physical resource block pair (non-hatched area) other than the uplink control channel. Also, the mobile station apparatus (a1) does not place signals on both the uplink control channel and the uplink shared channel in any one uplink subframe.

A demodulation reference signal (not shown) is time-multiplexed and allocated to the uplink shared channel and the uplink control channel. The sounding reference signal is allocated to the last SC-FDMA symbol of the subframe of the period set for each mobile station a1 by the base station apparatus b1 in the time domain, Are arranged in a frequency region set for each mobile station a1.

First, a description will be given of a signal arranged in the uplink control channel.

Uplink control information (UCI) signals such as channel quality information, scheduling request (SR), ACK / NACK, and the like used for communication control are allocated to the uplink control channel.

The channel quality information is information indicating the transmission quality of the downlink channel measured by the mobile station a1 in the downlink reference signal. The scheduling request is information transmitted when the mobile station a1 requests the base station device b1 to allocate the uplink radio resource. The ACK / NACK is information indicating the decoding part of the downlink shared channel received by the mobile station a1.

The base station device (b1) periodically allocates radio resources of the uplink control channel for transmitting the channel quality information and the scheduling request for each mobile station (a1). A radio resource of an uplink control channel for transmitting an ACK / NACK corresponds to a control channel element in which a downlink grant indicating allocation of a radio resource of a downlink shared channel corresponding to ACK / NACK is allocated in a frequency domain A radio resource of the uplink control channel and a radio resource after a predetermined time after the reception of the downlink shared channel in the time domain is used. In this embodiment, the ACK / NACK radio resource of the same uplink carrier element corresponds to the radio resource of the downlink control channel of the same downlink carrier element. Also, the TPC command for the uplink control channel included in the downlink grant is for the uplink carrier element in which the radio resource of the ACK / NACK corresponding to the downlink grant is allocated.

Next, signals to be allocated to the uplink shared channel will be described.

In the uplink shared channel, signals (data signals) of data information (transport block), which is information other than uplink control information, are arranged. The radio resources of the uplink shared channel are allocated using the uplink grant and allocated in a subframe after a predetermined time from the subframe receiving the uplink grant. In the present embodiment, the mobile station a1 determines, from the downlink carrier element that received the uplink grant, the uplink carrier element in which the uplink public channel indicating the radio resource allocation by the uplink grant is located. Also, the TPC command for the uplink shared channel and the sounding reference signal included in the uplink grant is for the uplink carrier element to which the uplink shared channel corresponding to the uplink grant is allocated. Further, the present invention is not limited to this, and the uplink carrier element in which the uplink shared channel is arranged may be identified in the uplink grant.

&Lt; Configuration of Base Station Apparatus b1 >

5 is a schematic block diagram showing a configuration of the base station apparatus b1 according to the present embodiment. As shown in the figure, the base station apparatus b1 includes an upper layer processing section b11, a control section b12, a reception processing section b13, a plurality of reception antennas, a transmission processing section b14, and a plurality of transmission antennas. The upper layer processing unit b11 includes a radio resource control unit b111, a transmission power control unit b112, and a storage unit b113. Although the receiving antenna and the transmitting antenna are configured to have different configurations in Fig. 5, an antenna may be shared by using a thyristor or the like having an action of switching input and output of signals.

The upper layer processing section b11 outputs data information and the like for each downlink carrier element acquired from the upper node to the transmission processing section b14. The upper layer processing section b11 also performs processing of a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Radio Resource Control (RRC) layer . The radio resource control section b111 of the upper layer processing section b11 performs various setting information, communication status and buffer status management of each mobile station a1. The transmission power control section b112 of the upper layer processing section b11 manages the uplink transmission power of each of the mobile station devices a1. The storage unit b113 of the upper layer processing unit b11 stores various setting information of each of the mobile station devices a1 set by the radio resource control unit b111 and the transmission power control unit b112.

In the above processing, the radio resource control section b111 provided in the upper layer processing section b11 determines whether or not the number of downlink carrier elements and uplink carrier elements that the base station apparatus b1 can use for radio communication, A plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station a1, depending on the number of downlink carrier elements and uplink carrier elements that can transmit or receive at the same time. Further, the radio resource control section b111, based on the number of the mobile station devices a1 accommodated in the downlink carrier element and the channel quality information indicating the quality of the downlink carrier element propagation path received from the mobile station device a1, And allocates an anchor downlink carrier element for transmitting the transmission power control format to the mobile station apparatus a1 to the mobile station apparatus a1. The radio resource control section b111 also stores in the mobile station a1 a C-RNTI for identifying the mobile station a1 or downlink control information, a TPC-PUCCH-RNTI for identifying a transmission power control format, a TPC -PUSCH-RNTI and the number (field) of the TPC command are assigned and notified.

Further, the radio resource control section b111 selects a plurality of downlink carrier elements and uplink carrier elements, and transmits radio resources in the selected downlink carrier elements and uplink carrier elements to the mobile station a1 as radio resources for allocating data information . The radio resource control section b111 transmits the downlink grant indicating the allocation and the uplink grant as downlink control information to the mobile station a1 through the transmission processing section b14. The downlink grant and the uplink grant are added with a sequence in which the C-RNTI assigned to the mobile station a1 corresponding to the downlink grant or the uplink grant and the cyclic redundancy check code are exclusive ORed.

The radio resource control section b111 also manages various setting information, a communication state, and a buffer status of each of the mobile station devices a1. The radio resource control section b111 generates or outputs information to be placed in each channel of each downlink carrier element from an upper node and outputs it to the transmission processing section b14 for each downlink carrier element. For example, the radio resource control section b111 generates downlink control information and outputs it to the transmission processing section b14.

The radio resource control section b111 also transmits uplink control information (ACK / NACK, channel quality information, scheduling request and buffer status of the mobile station a1) notified from the mobile station a1 on the uplink control channel The control section b12 generates control information for controlling the reception processing section b13 and the transmission processing section b14 based on various setting information of each of the mobile station devices a1 set by the radio resource control section b111, . For example, when the transmission processing section b14 arranges the transmission power control format, the radio resource control section b111 controls the radio resource control section b11 such that the anchor downlink carrier allocated to the mobile station a1 corresponding to the TPC command included in the transmission power control format And outputs the control information to the control unit b12 so as to arrange the transmission power control format in the common search space of the elements.

In the above processing, the transmission power control section b112 included in the upper layer processing section b11 transmits the information notified from the other base station apparatuses b1 and the reception power of the channel of the uplink received from the mobile station apparatus a1 The transmission power of the uplink channel is determined for each uplink carrier element of each mobile station a1. The information notified from the other base station apparatuses b1 is the interference amount to the other base station apparatuses b1 given by the mobile station apparatus a1 in communication with the magnetic apparatuses and the interference amount to the mobile station apparatuses a1 ) Is information on the amount of interference to be given to the magnetic device from now on. When the transmission power control section b112 determines the transmission power of the channel of the uplink for each uplink carrier element of each mobile station a1, the transmission power control section b112 sets the transmission power for each uplink carrier element to TPC Determines the value of the command, and generates the information of the TPC command.

The transmission power control section b112 allocates the same anchor downlink carrier element and also integrates the TPC commands for the mobile station a1 that have assigned the same TPC-PUCCH-RNTI or TPC-PUSCH-RNTI, And transmits the format to the mobile station a1 through the transmission processing unit b14. When there is an uplink grant or a downlink grant, the transmission power control section b112 includes a TPC command for the uplink carrier element corresponding to the uplink grant or the downlink grant, and transmits the TPC command to the transmission processing section b14 To the mobile station apparatus a1. In the transmission power control format, a sequence obtained by exclusive-ORing TPC-PUCCH-RNTI or TPC-PUSCH-RNTI allocated to a plurality of mobile station apparatuses a1 corresponding to the transmission power control format and cyclic redundancy check codes is added . TPC-PUCCH-RNTI is used when the TPC command included in the transmission power control format is for the uplink control channel, and TPC-PUSCH-RNTI is used when it corresponds to the uplink shared channel .

The storage unit b113 of the upper layer processing unit b11 stores various setting information of each of the mobile station devices a1 set by the radio resource control unit b111 and the transmission power control unit b112. 6 is a diagram showing an example of various setting information stored in the storage unit b113 according to the present embodiment. 6 stores setting information for each of the N mobile station devices a1 and a radio resource control section b111 and a transmission power control section b112 of the upper layer processing section b11 PUCCH-RNTI and TPC-PUSCH-RNTI, the identifier of the TPC-PUCCH-RNTI and the TPC-PUSCH-RNTI, the number of the anchor downlink carrier element set for each of the mobile station apparatuses a1, The number of the TPC command included in the transmission power control format corresponding to the uplink carrier element of each mobile station a1 and the value of the transmission power instructed to each of the mobile station a1 by the current TPC command are stored in a table format have. In addition, the number of the TPC command and the transmission power for the uplink carrier element that is not allocated to the mobile station a1 are blank.

In the present embodiment, the base station apparatus b1 transmits the same TPC-PUSCH-RNTI and TPC-PUCCH-RNTI to the mobile station a1 that has assigned the same anchor downlink carrier element as the mobile station apparatus A1 and the mobile station apparatus AN of Fig. -RNTI. In this way, the base station apparatus b1 can transmit the transmission power control format including one TPC-PUCCH-RNTI and the TPC-PUSCH-RNTI with one downlink carrier element. When the number of mobile station devices a1 that have allocated the same anchor downlink carrier element is larger than the number of TPC commands that can be transmitted in the transmission power control format, the base station device b1 allocates the same anchor downlink carrier element One mobile station a1 is divided into a plurality of groups and the same TPC-PUCCH-RNTI and TPC-PUSCH-RNTI are allocated to each of the mobile station devices a1 in the same group.

In addition, the TPC-PUCCH-RNTI and the TPC-PUSCH-RNTI allocated to the mobile station a1 having different anchor downlink carrier elements may be the same or different. The base station apparatus b1 allocates the same TPC-PUCCH-RNTI or TPC-PUSCH-RNTI to the mobile station a1 that has allocated different anchor downlink carrier elements so that TPC-PUCCH-RNTI and TPC- -PUSCH-RNTI can be reused, and the resource of the identifier (information resource that can be expressed by the number of bits used for the identifier) can be reduced.

In addition, by making the TPC-PUCCH-RNTI and the TPC-PUSCH-RNTI allocated to the mobile station a1 assigned different anchor downlink carrier elements to be different from each other, the base station device b1 necessarily requires one TPC-PUCCH- Only one group of the mobile station apparatuses corresponds to the TPC-PUSCH-RNTI, the management of the identifier of the base station apparatus b1 is simplified, and the structure of the base station apparatus b1 can be simplified.

In the present embodiment, the same TPC command number is assigned regardless of the number of bits of one TPC command included in the transmission power control format. However, the number of TPC commands included in the transmission power control format , Different TPC command numbers may be assigned.

The control unit b12 generates a control signal for controlling the reception processing unit b13 and the transmission processing unit b14 based on the control information from the upper layer processing unit b11. The control unit b12 outputs the generated control signal to the reception processing unit b13 and the transmission processing unit b14 to control the reception processing unit b13 and the transmission processing unit b14.

The reception processing section b13 demodulates and decodes the reception signal received from the mobile station a1 via the reception antenna in accordance with the control signal inputted from the control section b12 and outputs the decoded information to the upper layer processing section b11 do.

Specifically, the reception processing section b13 converts the signals of the uplink carrier elements received via the respective reception antennas to an intermediate frequency (downconverts), removes unnecessary frequency components, and adjusts the signal level so that the signal level is appropriately maintained Controls the amplification level, and orthogonally demodulates the received signal based on in-phase and quadrature components of the received signal, and converts the quadrature-demodulated analog signal into a digital signal. The receiving unit removes a portion corresponding to the guard interval (GI) from the converted digital signal. The receiver performs Fast Fourier Transform (FFT) on the signal from which the guard interval is removed, and extracts a signal in the frequency domain.

The reception processing unit b13 separates the extracted signal into signals allocated to the uplink control channel, the uplink shared channel, the demodulation reference signal, and the sounding reference signal for each uplink carrier element. Further, since the uplink control channel is code-multiplexed, despreading is performed to separate the uplink control channel. This separation is performed based on the radio resource allocation information that has been previously determined by the base station device b1 and has been notified to each of the mobile station devices a1. Further, an estimated value of the propagation path is obtained from the separated uplink reference signal, and the propagation path of the uplink control channel and the uplink shared channel is compensated.

The reception processing unit b13 acquires a modulation symbol by performing inverse discrete Fourier transform (IDFT) on the uplink shared channel, and for each of the modulation symbols of the uplink control channel and the uplink shared channel, Phase shift keying (BPSK), quadrature phase shift keying (QPSK), 16-value quadrature amplitude modulation (16QAM), 64-value quadrature amplitude modulation (64QAM) Or the base station device b1 demodulates the received signal using a modulation scheme previously notified to each of the mobile station devices a1 by the uplink grant.

The reception processing unit b13 transmits the coded bits of the demodulated uplink control channel and the uplink shared channel to the mobile station a1 in advance by a predetermined coding scheme or by the base station apparatus b1 in advance in the uplink grant And outputs the data information and the uplink control information to the upper layer processing unit b11.

The reception processing section b13 measures the reception power of the received signal of the uplink reference signal or the uplink shared channel received from each of the mobile station devices a1 and measures the transmission quality of the channel of the uplink carrier element, (b11).

The transmission processing section b14 generates a downlink reference signal in accordance with the control signal input from the control section b12 and encodes and modulates the data information and the downlink control information input from the upper layer processing section b11, Control channel, and downlink shared channel, multiplexes the generated downlink reference signal with the generated downlink reference signal, and transmits a signal to the mobile station a1 via the transmission antenna.

Specifically, the transmission processing section b14 transmits the downlink control information and the data information of each of the downlink carrier elements received from the upper layer processing section b11 to the turbo encoding and convolution processing section 14b according to the control signal input from the control section b12. Coding, and block coding, and modulates the coded bits by a modulation method such as QPSK, 16QAM, 64QAM, or the like. Also, the mobile station apparatus (a1), which is determined by a predetermined rule based on a cell identifier for identifying the base station apparatus (b1), generates a known sequence as a downlink reference signal, and the downlink control channel Multiplexes the channel and the downlink reference signal.

Further, the transmission power control format is multiplexed in the common search space of the anchor downlink carrier elements assigned to the corresponding mobile station (a1) by the TPC command included in the transmission power control format, and the downlink grant and uplink grant are multiplexed To the common search space of the anchor downlink carrier elements assigned to the mobile station a1 corresponding to the link grant and the uplink grant or to the mobile station apparatus specific search space for each downlink carrier element assigned to the mobile station a1.

The transmission processing unit b14 modulates the OFDM scheme by performing Inverse Fast Fourier Transform (IFFT) on the multiplexed modulation symbol, adds a guard interval to the OFDM symbol modulated by the OFDM scheme, Converts the baseband digital signal into an analog signal, generates an in-phase component and an orthogonal component of the intermediate frequency from the analog signal, removes an extra frequency component to the intermediate frequency band, (Upconverts) the signal, removes the extra frequency component, amplifies the power, and outputs the amplified signal to the transmission antenna.

<Configuration of Mobile Station a1>

Fig. 7 is a schematic block diagram showing the configuration of the mobile station apparatus al according to the present embodiment. As shown in the figure, the mobile station a1 includes an upper layer processing unit a11, a control unit a12, a reception processing unit a13, a plurality of reception antennas, a transmission processing unit a14, and a plurality of transmission antennas. The upper layer processing unit a11 includes a radio resource control unit a111, a transmission power control unit a112, and a storage unit a113. The transmission processing section a14 includes a power amplifying section a141. Although the receiving antenna and the transmitting antenna are different in Fig. 7, the antenna may be shared by using a thyristor or the like having an action of switching input / output of a signal.

The upper layer processing section a11 outputs the data information for each uplink carrier element generated by the user's operation or the like to the transmission processing section a14. The upper layer processing unit a11 performs processing of the packet data integration protocol layer, the radio link control layer, and the radio resource control layer. The radio resource control section (a111) provided in the upper layer processing section (a11) performs various setting information of the magnetic apparatus, the communication state, and the management of the buffer status. The transmission power control unit a112 of the upper layer processing unit a11 manages the uplink transmission power of the magnetic apparatus. The storage unit a113 of the upper layer processing unit a11 stores various setting information of the magnetic apparatus managed by the radio resource control unit a111.

In the above process, the radio resource control unit a111 included in the upper layer processing unit a11 transmits the uplink carrier element, the anchor downlink carrier element, the C-RNTI, the TPC-PUCCH-RNTI, TPC-PUSCH-RNTI, and the like. Further, the radio resource control section (a111) generates information to be allocated to each channel of each uplink carrier element, and outputs it to the transmission processing section a14 for each uplink carrier element. For example, the radio resource control section (a111) generates an ACK / NACK for the data information of the downlink shared channel in accordance with the result of the HARQ process, and outputs the generated ACK / NACK to the transmission processing section a14.

The radio resource control section a111 receives downlink control information (for example, a downlink grant and an uplink grant) notified from the base station apparatus b1 on the downlink control channel or the radio resource control section a11 Generates control information for controlling the reception processing section (a13) and transmission processing section (a14) based on various setting information of the apparatus, and outputs it to the control section a12. For example, when the reception processing unit (a13) monitors the downlink control channel, the radio resource control unit (a111) monitors the transmission power control format in the common search space of the anchor downlink carrier element, And outputs the control information to the control unit a12 so as to monitor the grant and the uplink grant in the common search space of the anchor downlink carrier element and the mobile station device specific search space of each downlink carrier element.

In the above process, the transmission power control unit a112 included in the upper layer processing unit a11 determines whether or not the TPC command transmitted from the base station apparatus b1 or the path loss measured from the downlink reference signal by the mobile station apparatus a1 Controls the transmission power of the uplink channel, generates control information for controlling the power amplification section a141, and outputs the control information to the control section a12.

The storage unit a113 of the upper layer processing unit a11 stores various setting information of the magnetic apparatuses managed by the radio resource control unit a111 and the transmission power control unit a112. 8 is a diagram showing an example of various setting information stored in the storage section a113 according to the present embodiment. In FIG. 8, the magnetic device records the number of the anchor downlink carrier element set in the base station apparatus b1, the identifiers (hexadecimal numbers) of the TPC-PUCCH-RNTI and the TPC-PUSCH-RNTI, the TPC- For each RNTI, the number of the TPC command included in the transmission power control format corresponding to the uplink carrier element of the magnetic apparatus and the value of the transmission power instructed by the magnetic apparatus with the current TPC command in the form of a table.

When the TPC command of the transmission power control format including the TPC-PUCCH-RNTI and the TPC command of the downlink grant are simultaneously received, the uplink carrier element to which the TPC command of the downlink grant corresponds corresponds to the TPC Command is applied, and the uplink carrier element to which the TPC command of the downlink grant does not correspond applies the TPC command of Format 3 / 3A. When the TPC command of the transmission power control format including the TPC-PUSCH-RNTI and the TPC command of the uplink grant are simultaneously received, the uplink carrier element to which the TPC command of the uplink grant corresponds corresponds to the TPC Command is applied, and the uplink carrier element to which the TPC command of the UL grant does not correspond applies the TPC command of Format 3 / 3A.

9 is a diagram showing an example of a configuration of a transmission power control format according to the present embodiment. 9, the transmission power control format includes M TPC commands (rectangles written as TPC # i; i is an integer), and the square formed by slashing includes a cyclic redundancy check code generated from M TPC commands and a TPC- PUCCH-RNTI (or TPC-PUSCH-RNTI).

For example, in the common search space of the downlink carrier element of DCC-2, which is an anchor downlink carrier element, the mobile station apparatus a1 having the setting information as shown in Fig. 8 transmits the TPC-PUCCH-RNTI "0001 Quot ;, the second TPC command of the detected transmission power control format is called the TPC command for the uplink carrier element of UCC-1 and the third TPC command for UCC-2 It is determined that the TPC command for the uplink carrier element and the fourth TPC command are the TPC command for the uplink carrier element of UCC-3 and the value of the transmission power indicated by the TPC command of the storage unit a113 of the upper layer processing unit a11 .

The control unit a12 generates a control signal for controlling the reception processing unit a13 and the transmission processing unit a14 based on the control information from the upper layer processing unit a11. The control unit a12 outputs the generated control signal to the reception processing unit a13 and the transmission processing unit a14 to control the reception processing unit a13 and the transmission processing unit a14.

The reception processing section a13 demodulates and decodes the reception signal received from the base station device b1 via the reception antenna and outputs the decoded information to the upper layer processing section a11 in accordance with the control signal inputted from the control section a12 Output. The reception processing section a13 also generates channel quality information based on the reception quality of the detected downlink reference signal and outputs it to the transmission processing section a14.

Specifically, the reception processing section a13 converts the signals of the uplink carrier elements received through the respective reception antennas to an intermediate frequency (downconverts), removes unnecessary frequency components, and adjusts the signal level so that the signal level is appropriately maintained Controls the amplification level, and orthogonally demodulates the received signal based on in-phase and quadrature components of the received signal, and converts the quadrature-demodulated analog signal into a digital signal. The receiving section a13 removes a portion corresponding to the guard interval from the converted digital signal. The receiving section a13 performs fast Fourier transform on the signal from which the guard interval is removed, and extracts the signal in the frequency domain.

The reception processing section (a13) separates the extracted signal into signals allocated to the downlink control channel, the downlink shared channel, and the downlink reference signal for each downlink carrier element. This separation is performed based on the allocation information of radio resources notified by the downlink grant. The reception processing section a13 obtains the estimated value of the propagation path from the separated downlink reference signal and compensates the propagation path of the downlink control channel and the downlink shared channel. The reception processing section a13 also generates channel quality information based on the reception quality of the separated downlink reference signal and outputs it to the transmission processing section a14.

The reception processing section (a13) performs demodulation of the QPSK modulation scheme on the downlink control channel, and transmits the transmission power control format in the common search space of the anchor downlink carrier element to the common search space of the downlink carrier element and the downlink carrier element Monitors the downlink grant and the uplink grant in each mobile station device specific search space, and attempts decoding. When decoding of the downlink control channel is successful, the decoded downlink control information is output to the upper layer processing unit a11.

The reception processing section a13 performs demodulation of the modulation scheme notified by the downlink grant such as QPSK, 16QAM, 64QAM, etc. to the downlink shared channel, performs decoding on the coding rate notified by the downlink grant, To the upper layer processing section a11.

The transmission processing section a14 generates an uplink reference signal in accordance with the control signal inputted from the control section a12 and outputs the data information inputted from the upper layer processing section a11, the ACK / NACK, And transmits the uplink reference signal to the base station apparatus b1 via the transmission antenna. The base station apparatus (b1) transmits the uplink reference signal to the base station apparatus (b1).

Specifically, the transmission processing section a14 transmits the uplink control information and the data information of each uplink carrier element inputted from the upper layer processing section a11 and the reception processing section a13, according to the control signal input from the control section a12 , Turbo coding, convolutional coding, block coding, and the like, and modulates the coded bits by a modulation scheme such as BPSK, QPSK, 16QAM, 64QAM, or the like.

The transmission processing unit a14 generates a known sequence as an uplink reference signal, which is determined by a predetermined rule based on a cell identifier for identifying the base station device b1 and the like, by the base station device b1. The transmission processing unit a14 spreads the modulation symbols of the uplink control channel by sign, rearranges the modulation symbols of the uplink shared channel in parallel, performs discrete Fourier transform (DFT) on the modulation symbols, Multiplexes with the reference signal.

The transmission processing section a14 performs inverse fast Fourier transform on the multiplexed signal, modulates the SC-FDMA system, adds a guard interval to the SC-FDMA modulated SC-FDMA symbol, generates a baseband digital signal , Converts the baseband digital signal to an analog signal, generates in-phase and quadrature components of the intermediate frequency from the analog signal, removes an extra frequency component to the intermediate frequency band, and converts the intermediate frequency signal into a high frequency signal Converts (upconverts), removes an extra frequency component, amplifies the power, and outputs the amplified signal to the transmission antenna.

In the above process, the power amplifying unit a141 amplifies the transmission power of the uplink control channel, the uplink shared channel, and the sounding reference signal according to the control signal input from the control unit a12. In addition, the transmission power of the demodulation reference signal is amplified to the same value as the transmission power of the channel on which the demodulation reference signal is time-multiplexed.

&Lt; Operation of wireless communication system >

Hereinafter, the operation of the wireless communication system will be described.

10 is a diagram showing a method of applying the TPC command to the uplink shared channel of the mobile station a1 according to the present embodiment. 10, when the mobile station apparatus a1 receives the downlink carrier elements DCC-1, DCC-2 and DCC-3 and the uplink carrier elements UCC-1, UCC-2 and UCC- ), And DCC-2 is set as an anchor downlink carrier element.

10, the abscissa indicates the time domain, the square formed by the oblique lattice line indicates the transmission power control format including the TPC-PUSCH-RNTI assigned to the mobile station a1, A rectangle in which a line is drawn represents an uplink grant, a rectangle in which a slant line is drawn represents an uplink common channel, a rectangle in which a dot is drawn represents a sounding reference signal, a bold arrow represents a transmission power control format and an uplink The time at which the TPC command for the common channel and the sounding reference signal applies the corresponding uplink carrier element and the TPC command.

10, the TPC command included in the uplink grant received at DCC-1 is for UCC-1, and the TPC command included in the uplink grant received at DCC-2 is an uplink grant for UCC- And the TPC command included in the uplink grant received by the DCC-3 is for the UCC-3, and the transmission power control format received in the DCC-2 common search space includes the UCC-1, the UCC-2, The TPC command for UCC-3 is included.

The sounding reference signal includes information on the uplink shared channel of the uplink grant received in each of the downlink carrier elements DCC-i (i = 1, 2, 3) and the uplink shared channel received in each of the uplink carrier elements The TPC command is for each uplink carrier element UCC-i (i = 1, 2, 3) after four subframes after the uplink grant is received and is received for the uplink carrier element UCC- The TPC command of the transmission power control format is for each uplink carrier element after four subframes after the transmission power control format is received.

Like the subframe of the uplink carrier element UCC-1 surrounded by the bold line in Fig. 10, the mobile station a1 transmits the uplink grant TPC command for the same uplink carrier element and the TPC command of the transmission power control format In the case of simultaneous reception, the TPC command of the UL grant is preferentially applied. When the mobile station apparatus a1 receives a different TPC command in the format for the uplink grant and the transmission power control by determining in advance which TPC command is selected from the UL grant and the transmission power control format Can be clarified. The base station apparatus b1 also detects whether the uplink shared channel corresponding to the uplink grant is transmitted from the mobile station a1 so that the mobile station a1 correctly receives the uplink grant and applies the TPC command It is possible to more accurately control the transmission power by preferentially selecting the TPC command of the uplink grant. Likewise, for the transmission power control format including the TPC-PUCCH-RNTI and the TPC command included in the downlink grant, the mobile station a1 preferentially selects the TPC command of the downlink grant.

11 is a flowchart showing an example of the operation of the base station apparatus b1 according to the present embodiment.

(Step S100) The base station apparatus b1 determines whether the downlink carrier element and the uplink carrier element that the base station apparatus b1 can use for wireless communication and the downlink carrier element that the mobile station apparatus a1 can transmit or receive at the same time A plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station a1 in accordance with the number of uplink carrier elements or the like. Next, the process proceeds to step S101.

(Step S101) Based on the number of mobile station apparatuses a1 accommodated in the downlink carrier element and the channel quality information indicating the quality of the downlink carrier element propagation path received from the mobile station apparatus a1 , And assigns an anchor downlink carrier element for transmitting the transmission power control format to the mobile station apparatus to the mobile station a1. Next, the process proceeds to step S102.

(Step S102) The base station apparatus b1 transmits an identifier (TPC-PUCCH-RNTI, TPC-PUSCH-RNTI) for identifying a channel corresponding to the TPC command included in the transmission power control format and transmission power control format, A number for identifying a plurality of TPC commands for uplink carrier elements allocated to the mobile station a1 included in the power control format is assigned to the mobile station a1. The base station apparatus b1 divides the mobile station apparatuses a1 assigned the same anchor downlink carrier element into a plurality of groups and transmits the same TPC-PUCCH-RNTI and TPC-PUSCH-RNTI to each of the mobile station apparatuses a1 of the same group. RNTI. Next, the flow proceeds to step S103.

(Step S103) The base station device b1 transmits the interference amount to the other base station device b1 given by the mobile station a1 communicating with the magnetic device, which is notified from the other base station device b1, And determines the transmission power of the channel of the mobile station apparatus a1 based on the reception power of the channel of the uplink received from the mobile station apparatus a1. Next, the process proceeds to step S104.

(Step S104) The base station apparatus b1 generates a TPC command to notify the mobile station apparatus a1 so that the transmission power of each channel of the uplink becomes the transmission power determined in step S103. Next, the process proceeds to step S105.

(Step S105) The base station apparatus b1 generates the transmission power control format from the TPC commands for each of the mobile stations a1 to which the same identifier is allocated among the plurality of TPC commands generated in step S104. If there is an uplink grant or a downlink grant, a TPC command is included in the uplink grant and the downlink grant. Next, the flow proceeds to step S106.

(Step S106) The base station apparatus b1 encodes and modulates downlink control information (transmission power control format, downlink grant, uplink grant) and transmits it on the downlink control channel. Further, the transmission power control format is arranged in the common search space of the anchor downlink carrier elements allocated to each of the mobile station devices a1 in step S101, and the downlink grant and the uplink grant are allocated to the common search space of the downlink carrier elements, Is placed in the mobile station device specific search space of each carrier element.

After step S106, the base station apparatus b1 ends the processing relating to the control of the transmission power of each channel of the uplink.

12 is a flowchart showing an example of the operation of the mobile station apparatus al according to the present embodiment. (Step S200) The mobile station apparatus a1 is assigned a plurality of uplink carrier elements and downlink carrier elements used for wireless communication from the base station apparatus b1. Next, the flow proceeds to step S201. (Step S201) The mobile station apparatus a1 receives the anchor downlink carrier element transmitted from the base station apparatus b1 to transmit the transmission power control format in front of the magnetic apparatus. Next, the flow proceeds to step S202.

(Step S202) The mobile station a1 transmits an identifier (TPC-PUCCH-RNTI, TPC-PUSCH-RNTI) for identifying the channel corresponding to the TPC command included in the transmission power control format and transmission power control format, A number for identifying a plurality of TPC commands for the uplink carrier element assigned to the magnetic apparatus included in the power control format is allocated from the base station apparatus b1. Next, the flow proceeds to step S203.

(Step S203) The mobile station apparatus a1 transmits the transmission power control format using the TPC-PUCCH-RNTI and the TPC-PUSCH-RNTI in the common search space of the anchor downlink carrier element to the common search space of the downlink carrier element Monitors the downlink grant and the uplink grant using the C-RNTI in the mobile station device specific search space of each carrier element, and attempts demodulation and decoding. Next, the process proceeds to step S204.

(Step S204) When the transmission power control format, the downlink grant, or the uplink grant is successfully decoded in step S203, the mobile station apparatus a1 determines whether the transmission power control format, the downlink grant, or the TPC Command updates the value of the TPC command for each uplink carrier element stored in the mobile station (a1). Next, the flow proceeds to step S205.

(Step S205) The mobile station apparatus a1 applies the value of the TPC command updated in step S204 to the channel of the uplink subframe after the predetermined time, and transmits the uplink channel.

After step S205, the mobile station (a1) terminates the process for controlling the transmission power of each channel of the uplink.

As described above, according to the present embodiment, in the radio communication system, the base station apparatus b1 allocates a plurality of uplink carrier elements and a plurality of downlink carrier elements to the mobile station a1, Sets a carrier element, informs the mobile station apparatus a1 of the set down anchor downlink carrier element, integrates a plurality of TPC commands for each uplink carrier element of the mobile station a1 into one downlink control information , And transmits the downlink control information including the TPC command for the plurality of uplink carrier elements to the anchor downlink carrier element. The mobile station apparatus (a1) transmits TPC And monitors the downlink control information including the command. Thus, in the radio communication system, the base station apparatus b1 uses only one downlink control information in order to transmit the TPC command of each uplink carrier element to the mobile station a1, so that the overhead of the downlink control information .

 In the above-described embodiment, the wireless communication system performs the processing for monitoring the downlink control information of the mobile station a1 when the mobile station a1 monitors the downlink control information with only one downlink carrier element Can be reduced.

(First Reference Example)

Hereinafter, a first reference example of the present invention will be described in detail with reference to the drawings.

In the above embodiment, the radio communication system sets one downlink carrier element among a plurality of downlink carrier elements assigned to the mobile station a1 by the base station device b1 as an anchor downlink carrier element, and sets one downlink carrier element The case where the transmission power control format is transmitted with the anchor downward carrier element has been described. In this reference example, the base station apparatus divides a plurality of uplink carrier elements allocated to the mobile station apparatus into a plurality (L) of groups, sets a downlink carrier element as an anchor downlink carrier element for each group of uplink carrier elements, A description will be given of a case where a transmission power control format is transmitted with one or more anchor downlink carrier elements.

When comparing the wireless communication system according to the present reference example and the wireless communication system according to the above embodiment, the upper layer processing units of the mobile station apparatus and the upper layer processing units of the base station apparatus are different. However, the constitution and the function of the different components are the same as those of the above-described embodiment, and the description of the same functions as those of the above embodiment will be omitted. Hereinafter, the mobile station apparatus according to the present reference example will be referred to as a mobile station apparatus a2, and the base station apparatus will be referred to as a base station apparatus b2.

13 is a schematic block diagram showing a configuration of a base station apparatus b2 according to the first reference example of the present invention. (FIG. 13) according to the present embodiment and the upper layer processing unit b11 (FIG. 5) according to the above embodiment, the radio resource control unit b211, the transmission power control unit b212, (b213). However, the functions of the other components (the control unit b12, the reception processing unit b13, and the transmission processing unit b14) are the same as those of the above-described embodiment. Descriptions of the same functions as those of the above embodiment are omitted.

Hereinafter, the processing of the upper layer processing section b21 of the base station apparatus b2 will be described.

In this reference example, the upper layer processing section b21 outputs the data information for each downlink carrier element to the transmission processing section b14. The upper layer processing section b21 performs processing of the packet data integration protocol layer, the radio link control layer, and the radio resource control layer. The radio resource control section b211 of the upper layer processing section b21 performs various configuration information, communication status and buffer status management for each of the mobile station devices a2. The transmission power control section b212 of the upper layer processing section b21 manages the uplink transmission power of each of the mobile station devices a2. The storage unit b213 of the upper layer processing unit b21 stores various setting information of each of the mobile station devices a2 set by the radio resource control unit b211 and the transmission power control unit b212.

In the above processing, the radio resource control section b211 provided in the upper layer processing section b21 determines whether or not the number of downlink carrier elements and uplink carrier elements that the base station device b2 can use for radio communication, A plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station a2 depending on the number of downlink carrier elements and uplink carrier elements that can transmit or receive at the same time. The radio resource control section b211 is also configured to control the radio resource control section b211 based on the frequency band (for example, 800 MHz or 3 GHz) of the uplink carrier element managed by the base station device b2 or coverage, interference from the adjacent base station device b2 , The uplink carrier element is divided into a plurality of groups, and the group configuration of the uplink carrier elements is notified to each of the mobile station devices a2.

The radio resource control section b211 also stores the number of the mobile station devices a2 received in the downlink carrier element, the channel quality information indicating the quality of the propagation path of the downlink carrier element received from the mobile station device a2, The downlink carrier element for transmitting the transmission power control format in front of the mobile station apparatus a2 for each group of the uplink carrier elements on the basis of the frequency band or coverage of the base station apparatus b2, Respectively. The radio resource control section b211 is further provided with a C-RNTI for identifying the downlink control information before the mobile station a2 and a C-RNTI for identifying the transmission power control format for each anchor downlink carrier element, TPC-PUCCH-RNTI, TPC-PUSCH-RNTI, and the number of the TPC command.

In addition, the radio resource control section (b211) may allocate different downlink carrier elements for each group of uplink carrier elements, and for downlink carrier elements for the plurality of groups of uplink carrier elements, Or may be allocated as a downlink carrier element.

The radio resource control section b211 may use the same TPC-PUCCH-RNTI and TPC-PUSCH-RNTI in a plurality of anchor downlink carrier elements when the anchor downlink carrier elements allocated for each group of uplink carrier elements are different. Thereby, the mobile station apparatus (a2) acquires from the anchor downlink carrier element that detects the transmission power control format including the TPC-PUCCH-RNTI or the TPC-PUSCH-RNTI, the group of uplink carrier elements corresponding to the transmission power control format And the radio resource control unit b211 can reduce resources of identifiers by reusing resources of identifiers assigned to TPC-PUCCH-RNTI and TPC-PUSCH-RNTI for each group of uplink carrier elements.

Also, if an anchor downlink carrier element to be allocated to each group of uplink carrier elements is different, the radio resource controller b211 may allocate different TPC-PUCCH-RNTI and TPC-PUSCH-RNTI for each group of uplink carrier elements . Thus, the base station apparatus b2 can manage the TPC-PUCCH-RNTI and the TPC-PUSCH-RNTI in the entire group of uplink carrier elements, thereby simplifying the structure of the base station apparatus b2.

In addition, when the same downlink carrier element is assigned as a downlink carrier element for a plurality of groups of uplink carrier elements, the radio resource control section b211 transmits different TPC-PUCCH-RNTI and TPC-PUSCH -RNTI may be assigned. Thereby, the mobile station apparatus (a2) can identify the group of uplink carrier elements corresponding to the transmission power control format from the TPC-PUCCH-RNTI or TPC-PUSCH-RNTI included in the detected transmission power control format, The number of downlink carrier elements for which the device a2 monitors the common search space can be reduced.

The radio resource control section b211 also receives the uplink control information (ACK / NACK, channel quality information, scheduling request and buffer status of the mobile station a2) notified from the mobile station a2 on the uplink control channel The control unit b12 generates control information for controlling the reception processing unit b13 and the transmission processing unit b14 based on various setting information of each of the mobile station devices a2 set by the radio resource control unit b211, . For example, when the transmission processing section b14 arranges the transmission power control format, the radio resource control section controls the radio resource control section so that the transmission power control format is arranged in the common search space of the anchor downlink carrier elements assigned to the group of the corresponding uplink carrier elements , And outputs the control information to the control unit b12.

In the above processing, the transmission power control section b212 provided in the upper layer processing section b21 performs the transmission power control of the mobile station apparatus a2 assigned the same TPC-PUCCH-RNTI or TPC-PUSCH-RNTI in the same anchor downlink carrier element And combines TPC commands for the group of uplink carrier elements to generate a format for transmission power control.

The storage unit b213 of the upper layer processing unit b21 stores various setting information of each of the mobile station devices a2 set by the radio resource control unit b211 and the transmission power control unit b212. 14 is a diagram showing an example of various setting information stored in the storage unit b213 according to the present reference example. 13, setting information for each of the N mobile station devices a2 is stored and the uplink carrier element is divided into a group of UCC-1 and UCC-2, a group of UCC-3 and UCC- -4. &Lt; / RTI &gt;

14, the storage unit b213 stores various setting information set by the radio resource control unit b211 and the transmission power control unit b212 for the UCC-1 and UCC-2 groups of the mobile station A1 , The TPC command number for the uplink control channel for UCC-1 is "2 ", the uplink control element for UCC-1 is " The value of the TPC command for the uplink control channel for the UCC-2 is set to " 4dBm ", the value of the TPC command for the uplink control channel for the UCC- , The TPC-PUSCH-RNTI is set to "0002", the TPC command number for the uplink shared channel for UCC-1 is set to "4", the value of the TPC command for the uplink shared channel of the UCC-1 is set to "0dBm" The number of the TPC command for the uplink control channel for the UCC-2 is "1" and the value of the TPC command for the uplink common channel of the UCC-2 is "1dBm" All.

The radio resource control section b211 and the transmission power control section b212 of the upper layer processing section b21 transmit the number of the anchor downlink carrier element set for each of the mobile station devices a2 and the TPC- RNTI and the TPC-PUSCH-RNTI, the TPC-PUCCH-RNTI, and the TPC-PUSCH-RNTI, the TPC command included in the transmission power control format corresponding to the uplink carrier element of each mobile station a2 And the value of the transmission power instructed to each of the mobile station devices a2 by the current TPC command in the form of a table. In Fig. 14, the TPC command number and transmission power for the uplink carrier element that the base station apparatus b2 does not allocate to the mobile station a2 are blank.

15 is a schematic block diagram showing the configuration of the mobile station apparatus a2 according to the first reference example of the present invention. The radio resource control section a 211 and the storage section a 213 differ from each other in the comparison between the upper layer processing section a 21 (Fig. 15) according to this reference example and the upper layer processing section a11 according to the above embodiment (Fig. 7). However, the functions of the other components (the transmission power control section a112, the control section a12, the reception processing section a13, and the transmission processing section a14) are the same as those of the above-described embodiment. Descriptions of the same functions as those of the above embodiment are omitted.

Hereinafter, the processing of the upper layer processing section a21 of the mobile station apparatus a2 will be described.

In this reference example, the upper layer processing section a21 outputs data information for each uplink carrier element generated by the user's operation to the transmission processing section a14. The upper layer processing section (a21) performs processing of the packet data integration protocol layer, the radio link control layer, and the radio resource control layer. The radio resource control section (a 211) provided in the upper layer processing section (a21) performs various setting information of the magnetic apparatus, the communication status, and the management of the buffer status. The storage unit a213 of the upper layer processing unit a21 stores various setting information of the magnetic device managed by the radio resource control unit a21.

In the above process, the radio resource control unit a211 included in the upper layer processing unit a21 is configured to assign the C-RNTI allocated to the own apparatus, the downlink carrier element and the uplink carrier element, the group configuration of the uplink carrier element set, Anchor downlink carrier element for each group of TPC-PUCCH-RNTI and TPC-PUSCH-RNTI. Further, the radio resource control section (a 211) generates information to be allocated to each channel of each uplink carrier element, and outputs it to the transmission processing section a14 for each uplink carrier element.

The radio resource control unit a211 transmits the downlink control information (for example, the downlink grant and the uplink grant) notified from the base station apparatus b2 on the downlink control channel or the radio resource control unit a2 Generates control information for controlling the reception processing section (a13) and transmission processing section (a14) based on various setting information of the apparatus, and outputs it to the control section a12. For example, when the reception processing unit (a13) monitors the downlink control channel, the radio resource control unit (a111) monitors the transmission power control format in the common search space of the anchor downlink carrier element for each group of the uplink carrier elements, And outputs the control information to the control unit a12 so as to monitor the downlink grant and the uplink grant in front of the magnetic device in the common search space of the anchor downlink carrier element and the mobile station device specific search space of each of the downlink carrier elements.

The storage section a213 of the upper layer processing section a21 stores various setting information of the magnetic apparatus managed by the radio resource control section a211 and the transmission power control section a112. Fig. 16 is a diagram showing an example of various setting information stored in the storage section a213 according to the present reference example. In Fig. 16, the magnetic device compares the number of the downlink anchor carrier element set in the base station apparatus b2 with the group of the uplink carrier elements (group of UCC-1 and UCC-2, group of UCC-3 and UCC-4) The TPC-PUCCH-RNTI and the TPC-PUSCH-RNTI identifiers (hexadecimal numbers), the TPC-PUCCH-RNTI and the TPC-PUSCH-RNTI, And the value of the transmission power indicated by the magnetic device by the current TPC command in the form of a table.

For example, in Fig. 16, the storage unit a213 stores various types of setting information set in the base station apparatus b2 as the UCC-1 and the UCC-2 group of the magnetic apparatus as the anchor downward carrier element as "DCC-2 Quot ;, the TPC-PUCCH-RNTI is set to "0001 ", the TPC command number for the uplink control channel for UCC-1 is set to 2, the TPC command value for the uplink control channel for UCC- The value of the TPC command for the uplink control channel of the UCC-2 is "4dBm ", the value of the TPC-PUSCH-RNTI is" 0002 ", the value of the TPC command for the uplink control channel for the UCC- The TPC command number for the uplink shared channel for UCC-1 is "4", the value of the TPC command for the uplink shared channel of UCC-1 is "0dBm", the value of the TPC command for the uplink shared channel for UCC- The number of the TPC command is "1 ", and the value of the TPC command for the uplink shared channel of the UCC-2 is" 1dBm ".

17 is a diagram showing a method of applying the TPC command to the uplink shared channel of the mobile station a2 according to the present reference example. 17, the mobile station apparatus a2 includes four downlink carrier elements DCC-1, DCC-2, DCC-3 and DCC-4 and four uplink carrier elements UCC-1, UCC- DCC-2 is set as an anchor downlink carrier element for a group of UCC-1 and UCC-2, DCC-2 is set as an anchor downlink carrier element for a group of UCC-3 and UCC- -3 is set.

17, the abscissa indicates the time domain, the square formed by the oblique lattice line indicates the transmission power control format including the TPC-PUSCH-RNTI allocated to the mobile station a2, and the vertical and horizontal lattice- A rectangle in which a line is drawn represents an uplink grant, a rectangle in which a slant line is drawn represents an uplink common channel, a rectangle in which a dot is drawn represents a sounding reference signal, a bold arrow represents a transmission power control format and an uplink The time at which the TPC command for the common channel and the sounding reference signal applies the corresponding uplink carrier element and the TPC command.

17, the TPC command included in the uplink grant received at DCC-1 is for UCC-1, and the TPC command included in the uplink grant received at DCC-2 is an uplink grant for UCC- And the TPC command included in the uplink grant received at DCC-3 is for UCC-3. The transmission power control format received in the common search space of the DCC-2 includes TPC commands for the UCC-1 and the UCC-2, and the transmission power control format received in the common search space of the DCC- TPC commands for UCC-3 and UCC-4 are included.

The sounding reference signal is allocated with a periodic radio resource in each of the uplink carrier elements and is associated with uplink shared channel of the uplink grant received in each of the downlink carrier elements DCC-i (i = 1, 2, 3, 4) Information and the TPC command are for each uplink carrier component UCC-i (i = 1, 2, 3, 4) after four subframes after the uplink grant is received, and the anchor downlink carrier component DCC- The TPC command of the format for transmission power control received in the common search space of 3 is for each uplink carrier element after four subframes after the transmission power control format is received.

As described above, according to the present reference example, the radio communication system is configured so that, based on the environment of the uplink carrier element such as the coverage of the uplink carrier element or the interference from the adjacent base station apparatus b2, It is possible to effectively control the transmission power suitable for the environment of the uplink carrier element since the uplink carrier elements can be grouped and TPC commands for the group of uplink carrier elements can be integrated and transmitted.

(Second Reference Example)

Hereinafter, a second reference example of the present invention will be described in detail with reference to the drawings.

In the above embodiment, the radio communication system sets one downlink carrier element among a plurality of downlink carrier elements assigned to the mobile station a1 by the base station device b1 as an anchor downlink carrier element, and sets one downlink carrier element The case where the transmission power control format is transmitted with the anchor downward carrier element has been described. In this reference example, a case where the base station apparatus transmits a transmission power control format to any one downlink carrier element among a plurality of downlink carrier elements allocated to the mobile station apparatus will be described.

When comparing the wireless communication system according to the present reference example and the wireless communication system according to the above embodiment, the upper layer processing units of the mobile station apparatus and the upper layer processing units of the base station apparatus are different. However, the constitution and the function of the other constituent elements are the same as those of the above-described embodiment, and explanations of the same functions as those of the above embodiment will be omitted. Hereinafter, the mobile station apparatus according to the present reference example is referred to as a mobile station apparatus a3, and the base station apparatus is referred to as a base station apparatus b3.

18 is a schematic block diagram showing a configuration of a base station apparatus b3 according to a second reference example of the present invention. 5) according to this embodiment and the upper layer processing unit b11 (Fig. 5) according to the above-described embodiment, the radio resource control unit b311, the transmission power control unit b312, (b313). However, the functions of the other components (the control unit b12, the reception processing unit b13, and the transmission processing unit b14) are the same as those of the above-described embodiment. Descriptions of the same functions as those of the above embodiment are omitted.

Hereinafter, the processing of the upper layer processing section b313 of the base station apparatus b3 will be described.

In this reference example, the upper layer processing section b313 outputs the data information for each downlink carrier element to the transmission processing section b14. The upper layer processing section b31 performs processing of the packet data integration protocol layer, the radio link control layer, and the radio resource control layer. The radio resource control section b311 of the upper layer processing section b31 performs various configuration information, communication status and buffer status management for each of the mobile station devices a3. The transmission power control section b312 of the upper layer processing section b31 manages the uplink transmission power of each of the mobile station devices a3. The storage unit b313 of the upper layer processing unit b31 stores various setting information of each of the mobile station devices a3 set by the radio resource control unit b311 and the transmission power control unit b312.

In the above processing, the radio resource control section b311 provided in the upper layer processing section b31 determines whether the number of downlink carrier elements and uplink carrier elements that the base station device b3 can use for radio communication, A plurality of uplink carrier elements and downlink carrier elements are allocated to the mobile station a3 depending on the number of downlink carrier elements and uplink carrier elements that can transmit or receive at the same time. The radio resource control section b311 also includes a C-RNTI for identifying the downlink control information for the mobile station device a3, a TPC for identifying the transmission power control format for each anchor downlink carrier element, -PUCCH-RNTI, TPC-PUSCH-RNTI, and the number of the TPC command, and notifies.

The radio resource control unit b311 also transmits uplink control information (ACK / NACK, channel quality information, scheduling request and buffer status of the mobile station a3) notified from the mobile station apparatus a3 via the uplink control channel The control section b12 generates control information for controlling the reception processing section b13 and the transmission processing section b14 based on various setting information of each of the mobile station devices a3 set by the radio resource control section b311, . For example, when the transmission processing section b14 arranges the transmission power control format, the radio resource control section b311 selects the downlink carrier element of good quality in the propagation path and places it in the common search space of the selected downlink carrier element And outputs the control information to the control unit b12.

In the above processing, the transmission power control section b313 included in the upper layer processing section b31 collectively transmits TPC commands for the mobile station a2 to which the same TPC-PUCCH-RNTI or TPC-PUSCH-RNTI is allocated And generates a format for power control.

The storage unit b313 of the upper layer processing unit b31 stores various setting information of each of the mobile station devices a3 set by the radio resource control unit b311 and the transmission power control unit b312. 19 is a diagram showing an example of various setting information stored in the storage section b313 according to the present reference example. In Fig. 19, setting information for each of the N mobile station devices A1, A2, ..., AN is stored. The TPC-PUCCH-RNTI and TPC-PUSCH-RNTI identifiers (hexadecimal numbers) set in the mobile station apparatus a3 by the radio resource control section b311 and the transmission power control section b312 of the upper layer processing section b31, , The number of the TPC command included in the transmission power control format corresponding to the uplink carrier element of each of the mobile station apparatuses a3 and TPC-PUSCH-RNTI, and the number of the TPC command included in the TPC- And the value of the transmission power is stored in the form of a table. The TPC command number and transmission power for the uplink carrier element that the base station apparatus b3 does not allocate to the mobile station a3 are blank.

19, the storage unit b313 stores TPC-PUCCH-RNTI as "0001 " as various setting information set by the radio resource control unit b311 and the transmission power control unit b312 for the mobile station A1 1, the value of the TPC command for the uplink control channel of the UCC-1 is "0dBm ", the value of the TPC command for the uplink control channel for the UCC- The value of the TPC command for the uplink control channel of the UCC-2 is "4dBm ", the number of the TPC command for the uplink control channel for the UCC-3 is" The value of the TPC command for the uplink shared channel for the UCC-3 is " 1 ", the value of the TPC command for the uplink shared channel for the UCC- The value of the TPC command for the uplink shared channel of -1 is set to "0dBm", the number of the TPC command for the uplink control channel to the UCC-2 is set to "2", the value of the UCC- The value of the TPC command for the uplink shared channel is set to "4dBm", the number of the TPC command for the uplink control channel for the UCC-3 is set to "3", the value of the TPC command for the uplink control channel of the UCC- Quot; 1dBm ".

20 is a schematic block diagram showing the configuration of the mobile station apparatus a3 according to the second reference example of the present invention. The radio resource control section a 311 and the storage section a 313 are different from each other in comparison between the upper layer processing section a 31 (FIG. 20) according to this reference example and the upper layer processing section a 11 according to the above embodiment (FIG. 7). However, the functions of the other components (the transmission power control section a112, the control section a12, the reception processing section a13, and the transmission processing section a14) are the same as those of the above-described embodiment. Descriptions of the same functions as those of the above embodiment are omitted.

Hereinafter, the processing of the upper layer processing section a31 of the mobile station apparatus a3 will be described.

In this reference example, the upper layer processing section a31 outputs data information for each uplink carrier element generated by the user's operation to the transmission processing section a14. The upper layer processing section a31 performs processing of the packet data integration protocol layer, the radio link control layer, and the radio resource control layer. The radio resource control section (a311) provided in the upper layer processing section (a31) performs various setting information of the magnetic device, the communication state, and the management of the buffer status. The storage unit a313 of the upper layer processing unit a31 stores various setting information of the magnetic device managed by the radio resource control unit a311 and the transmission power control unit a112.

In the above process, the radio resource control unit a311 included in the upper layer processing unit a31 transmits the downlink carrier element and the uplink carrier element, the C-RNTI, the TPC-PUCCH-RNTI, and the TPC-PUSCH-RNTI And the like. The radio resource control section (a311) generates information to be allocated to each channel of each uplink carrier element, and outputs it to the transmission processing section b14 for each uplink carrier element.

The radio resource control unit a311 receives the downlink control information (for example, the downlink grant and the uplink grant) notified from the base station apparatus b3 on the downlink control channel or the radio resource control unit a311 Generates control information for controlling the reception processing section b13 and the transmission processing section b14 based on various setting information of the apparatus, and outputs the control information to the control section b12. For example, when the reception processing unit b13 monitors the downlink control channel, the radio resource control unit a311 monitors the transmission power control format in the common search space of each downlink carrier element, And outputs control information to the control unit b12 to monitor the downlink grant and the uplink grant in front of the magnetic device in the common search space and the mobile station device specific search space of each of the downlink carrier elements.

The storage section a313 of the upper layer processing section a31 stores various setting information of the magnetic apparatus managed by the radio resource control section a311 and the transmission power control section a112. 21 is a diagram showing an example of various setting information stored in the storage section a313 according to the present reference example. In FIG. 21, the magnetic apparatus sets up the magnetic device for each TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, the identifier (hexadecimal number) of the TPC-PUSCH- The number of the TPC command included in the transmission power control format corresponding to the carrier element and the value of the transmission power instructed by the magnetic apparatus with the current TPC command are stored in the form of a table.

16, the storage unit a313 stores TPC-PUCCH-RNTI as "0001" as the various setting information set in the base station apparatus b3, uplink control channel for UCC- The value of the TPC command for the uplink control channel of the UCC-1 is "0dBm ", the number of the TPC command for the uplink control channel for the UCC-2 is" The value of the TPC command for the uplink control channel of the UCC-2 is set to "4dBm", the number of the TPC command for the uplink control channel for the UCC-3 is set to "4", the value of the TPC command for the uplink control channel of the UCC- The TPC command number for the uplink shared channel for the UCC-1 is "1 ", the TPC command for the uplink shared channel of the UCC-1 is " 1dBm ", the TPC-PUSCH- Quot; 0dBm ", the number of the TPC command for the uplink control channel for the UCC-2 is "2 ", the value of the TPC command for the uplink common channel of the UCC- The number of the TPC command for the uplink control channel for the "4dBm" UCC-3 is "3 ", and the value of the TPC command for the uplink control channel of the UCC-3 is" 1dBm ".

22 is a diagram showing a method of applying the TPC command to the uplink shared channel of the mobile station apparatus a3 according to the present reference example. 22, the mobile station apparatus a3 includes the downlink carrier elements DCC-1, DCC-2, DCC-3 and the uplink carrier elements UCC-1, UCC-2, ) Is assigned to the user.

22, the abscissa indicates the time domain, the square formed by the oblique lattice line indicates the transmission power control format including the TPC-PUSCH-RNTI assigned to the mobile station a3, and the vertical and horizontal lattice- A rectangle in which a line is drawn represents an uplink grant, a rectangle in which a slant line is drawn represents an uplink common channel, a rectangle in which a dot is drawn represents a sounding reference signal, a bold arrow represents a transmission power control format and an uplink The time at which the TPC command for the common channel and the sounding reference signal applies the corresponding uplink carrier element and the TPC command.

22, the TPC command included in the uplink grant received at DCC-1 is for UCC-1, and the TPC command included in the uplink grant received at DCC-2 is an uplink grant for UCC- And the TPC command included in the uplink grant received at DCC-3 is for UCC-3. Further, in the transmission power control format received in the common search space of each of the downlink carrier elements DCC-1, DCC-2, and DCC-3, uplink carrier elements UCC-1, UCC- TPC commands are included. In addition, the mobile station apparatus a3 receives only one transmission power control format at a time.

The sounding reference signal is allocated with a periodic radio resource in each of the uplink carrier elements, and information on the uplink shared channel of the uplink grant received in each downlink carrier element DCC-i (i = 1, 2, 3) The TPC command is for each uplink carrier element UCC-i (i = 1, 2, 3) after three subframes after the uplink grant is received, and for the transmit power control received in the common search space of each downlink carrier element Format TPC command is for each uplink carrier element after three subframes after the transmission power control format is received.

As described above, according to the present reference example, since the mobile station a3 monitors the format for transmission power control with all the downlink carrier elements set in the base station b3, the base station b3 transmits the control information to the mobile station the base station apparatus b3 can select the downlink carrier element having a good quality or overhead of the downlink control channel because the transmission power control format can be arranged in the common search space of all the downlink carrier elements set in the downlink control channel The degree of freedom of arrangement of the transmission power control format can be increased.

In the above embodiment, the base station apparatus b1 may set all anchor downlink carrier elements assigned to the mobile station a1 to the same downlink carrier element. Thereby, the base station apparatus b1 does not need to set and manage an anchor downlink carrier element for each mobile station a1, so that the configuration of the base station apparatus b1 can be simplified.

In the above-described embodiment, the base station apparatus b1 is configured to form a transmission power control format from a plurality of TPC commands having the same number of bits. However, the base station apparatus b1 may use a plurality of TPC command fields having the same number of bits, Command may be configured. The base station apparatus b1 sets a field of a plurality of TPC commands for the uplink carrier element for each mobile station a1 and uses the total number of bits of the field of the plurality of TPC commands to transmit the uplink carrier element common TPC command, The TPC command for each carrier element and the like can be notified. This format is predefined or configurable.

The base station apparatus b1 sets the configuration of the TPC command such as the number of bits of the TPC command for the uplink carrier element for each mobile station a1 and sets the configuration of the set TPC command and the configuration of the mobile station a1 included in the transmission power control format (Field) including the TPC command for the device a1 to the mobile station a1. Thereby, the base station apparatus b1 can transmit a TPC command having a configuration suitable for each mobile station a1.

Further, in the first reference example, the base station apparatus b2 may constitute a group of uplink carrier elements different for each mobile station apparatus a2. This makes it possible to more effectively control the transmission power in consideration of the environment of the uplink carrier element as well as the environment of the mobile station a2.

The program that operates in the base station apparatus and the mobile station apparatus according to the present invention may be a program (a program that functions as a computer) that controls a CPU (Central Processing Unit) or the like to realize the functions of the above-described embodiments of the present invention. Information handled by these devices is temporarily stored in a RAM (Random Access Memory) at the time of the processing, and thereafter stored in various ROMs and HDD (Hard Disk Drives) such as Flash ROM , And if necessary, read by the CPU, and correction / writing is performed.

A part of the mobile station apparatuses a1 to a3 and the base station apparatuses b1 to b3 in the above-described embodiment may be realized by a computer. In this case, a program for realizing the control function may be recorded on a computer-readable recording medium, and a program recorded on the recording medium may be read by a computer system and executed. Here, the "computer system" is a computer system built in the mobile stations a1 to a3 or base station devices b1 to b3, and includes hardware such as an OS and a peripheral device. The "computer-readable recording medium" refers to a storage device such as a flexible disk, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, or a hard disk built in a computer system. The term &quot; computer-readable recording medium &quot; refers to a medium such as a communication line for transmitting a program via a communication line such as a network such as the Internet or a telephone line, a program or the like in a short time or dynamically. Or a volatile memory in a computer system for storing a program for a predetermined period of time. The program may be one for realizing a part of the functions described above, or may be realized by a combination with the program already recorded in the computer system.

A part or all of the mobile station devices a1 to a3 and the base station devices b1 to b3 in the above-described embodiments may be realized as an LSI typically as an integrated circuit. Alternatively, a plurality of integrated circuits It may be realized as a set. Each of the functional blocks of the mobile stations a1 to a3 and the base stations b1 to b3 may be individually chip-formed, or some or all of them may be integrated into a chip. The method of making the integrated circuit is not limited to the LSI, but may be realized by a dedicated circuit or a general-purpose processor. Further, when the technology of making integrated circuits to replace LSI by the progress of semiconductor technology appears, it is also possible to use an integrated circuit according to the technology.

While the embodiment of the present invention has been described in detail with reference to the drawings, the specific structure is not limited to the above, and various design changes and the like can be made within the range not deviating from the gist of the present invention .

Mobile station devices: a1, a2, a3
Base station apparatus: b1, b2, b3
Upper layer processing section: a11, a21, a31
Radio resource control units: a111, a211, a311
Transmission power control section: a112
Storage unit: a113, a213, a313
Control section: a12
Reception Processing Section: a13
Transmission processing section: a14
Power amplification part: a141
Upper layer processing section: b11, b21, b31
Wireless resource control units: b111, b211, b311
Transmission power control units: b112, b212, b312
Storage unit: b113, b213, b313
Control section: b12
Reception processing unit: b13
Transmission processing section: b14

Claims (6)

A base station apparatus for performing radio communication with a mobile station apparatus using a plurality of downlink component carriers and a plurality of uplink component carriers,
Wherein the base station apparatus transmits a physical downlink shared channel to the mobile station apparatus through one of the plurality of downlink component carriers,
Wherein the base station apparatus includes a TPC (Transmission Power Control) command for information indicating radio resource allocation to the downlink shared channel and uplink control channel of one uplink component carrier among the plurality of uplink component carriers Transmits downlink control information to the mobile station apparatus,
Wherein the uplink control channel of the uplink component carrier is used for ACK (ACKnowledgment) / NACK (Negative-ACKnowledgment) transmission for the downlink shared channel. A mobile station apparatus for performing radio communication with a base station apparatus using a plurality of downlink component carriers and a plurality of uplink component carriers,
Wherein the mobile station apparatus receives a downlink shared channel from the base station apparatus with one of the plurality of downlink component carriers,
The mobile station apparatus includes a TPC (Transmission Power Control) command for information indicating radio resource allocation to the downlink shared channel and uplink control channel of one uplink component carrier among the plurality of uplink component carriers Receiving downlink control information from the base station apparatus,
Wherein the uplink control channel of the uplink component carrier is used for ACK (acknowledgment) / NACK (Negative-ACKnowledgment) transmission for the downlink shared channel. A wireless communication method by a base station apparatus that performs wireless communication with a mobile station apparatus using a plurality of downlink component carriers and a plurality of uplink component carriers,
Wherein the base station apparatus transmits a downlink shared channel to any one of the plurality of downlink component carriers to the mobile station apparatus,
Wherein the base station apparatus includes a TPC (Transmission Power Control) command for information indicating radio resource allocation to the downlink shared channel and uplink control channel of one uplink component carrier among the plurality of uplink component carriers Transmits downlink control information to the mobile station apparatus,
Wherein the uplink control channel of the uplink component carrier is used for ACK (acknowledgment) / NACK (Negative-ACKnowledgment) transmission for the downlink shared channel. A radio communication method by a mobile station apparatus that performs radio communication with a base station apparatus using a plurality of downlink component carriers and a plurality of uplink component carriers,
Wherein the mobile station apparatus receives a downlink shared channel from the base station apparatus with one of the plurality of downlink component carriers,
The mobile station apparatus includes a TPC (Transmission Power Control) command for information indicating radio resource allocation to the downlink shared channel and uplink control channel of one uplink component carrier among the plurality of uplink component carriers Receiving downlink control information from the base station apparatus,
Wherein the uplink control channel of the uplink component carrier is used for ACK (acknowledgment) / NACK (Negative-ACKnowledgment) transmission for the downlink shared channel. There is provided an integrated circuit provided in a base station apparatus that performs wireless communication with a mobile station apparatus using a plurality of downlink component carriers and a plurality of uplink component carriers,
Wherein the base station apparatus transmits a downlink shared channel to any one of the plurality of downlink component carriers to the mobile station apparatus,
Wherein the base station apparatus includes a TPC (Transmission Power Control) command for information indicating radio resource allocation to the downlink shared channel and uplink control channel of one uplink component carrier among the plurality of uplink component carriers Transmits downlink control information to the mobile station apparatus,
Wherein the uplink control channel of the uplink component carrier is used for transmission of ACK (ACKnowledgment) / NACK (Negative-ACKnowledgment) for the downlink common channel. An integrated circuit provided in a mobile station apparatus that performs radio communication with a base station apparatus using a plurality of downlink component carriers and a plurality of uplink component carriers,
Wherein the mobile station apparatus receives a downlink shared channel from the base station apparatus with one of the plurality of downlink component carriers,
The mobile station apparatus includes a TPC (Transmission Power Control) command for information indicating radio resource allocation to the downlink shared channel and uplink control channel of one uplink component carrier among the plurality of uplink component carriers Receiving downlink control information from the base station apparatus,
Wherein the uplink control channel of the uplink component carrier is used for transmission of ACK (ACKnowledgment) / NACK (Negative-ACKnowledgment) for the downlink common channel.

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